An easy way to set all your products in RepricerExpress to have the same Min and Max price would be to do this via your pricing rule(s).
Our Youtube channel provides a video guide.
Simply go into your Repricing rule and click on the 'Min and Max Prices' section.
Here you will see the 'Min/Max Type' and you will be able to tick 'New Min/Max for this rule'.
You can then set the Min and Max price you would like for all your products.
Please note: if you have multiple rules with products assigned to them, you will need to update each rule.
You can also bulk update your Min and Max prices to be the same on screen (see here)
or via an import (see here